Eigenstrain method in simulations of laser peen forming of curved surfaces

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Eigenstrain method in simulations of laser peen forming of curved surfaces

POLTL Dominik, TEJA SALA Siva, KASHAEV Nikolai, KLUSEMANN Benjamin

Abstract. The eigenstrain ansatz allows for the efficient simulation of large-scale applications of Laser Peen Forming (LPF) while being subject to geometric constraints. A setup to investigate the viability of the method for non-uniform curvature is proposed. A small-scale laser processing is simulated on cylinder shells of given curvature. Eigenstrains are determined in representative cells and mapped onto a second cylinder shell with different curvature to simulate a large-scale processing operation. The eigenstrains result in changes in local curvature. This is repeated for four curvatures. The resulting data is used to investigate the dependence of the induced curvature change on the origin geometry of the eigenstrains. A determined regression relation provides insight into the feasibility of the eigenstrain ansatz beyond its constrains.

Keywords
Finite Element Analysis, Laser Peen Forming, Eigenstrain, Bending, Curvature

Published online 4/24/2024, 9 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: POLTL Dominik, TEJA SALA Siva, KASHAEV Nikolai, KLUSEMANN Benjamin, Eigenstrain method in simulations of laser peen forming of curved surfaces, Materials Research Proceedings, Vol. 41, pp 2355-2363, 2024

DOI: https://doi.org/10.21741/9781644903131-259

The article was published as article 259 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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